145 lines
4.5 KiB
C++
145 lines
4.5 KiB
C++
/******************************************************************************
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*
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* Copyright 2021 Google, Inc.
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at:
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*
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******************************************************************************/
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#define LOG_TAG "BtGdWakelockNative"
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#include "os/internal/wakelock_native.h"
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#include <aidl/android/system/suspend/ISystemSuspend.h>
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#include <aidl/android/system/suspend/IWakeLock.h>
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#include <android/binder_ibinder.h>
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#include <android/binder_manager.h>
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#include <fcntl.h>
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#include <unistd.h>
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#include <cerrno>
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#include <string>
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// We want the os/log.h definitions
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#undef LOG_DEBUG
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#undef LOG_INFO
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#include "os/log.h"
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// Save the os/log.h definitions
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#pragma push_macro("LOG_DEBUG")
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#pragma push_macro("LOG_INFO")
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// Undef these to avoid conflicting with later imports
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#undef LOG_DEBUG
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#undef LOG_INFO
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using ::aidl::android::system::suspend::ISystemSuspend;
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using ::aidl::android::system::suspend::IWakeLock;
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using ::aidl::android::system::suspend::WakeLockType;
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namespace bluetooth {
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namespace os {
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namespace internal {
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// Restore the os/log.h definitions after all imported headers
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#pragma pop_macro("LOG_DEBUG")
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#pragma pop_macro("LOG_INFO")
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static void onSuspendDeath(void* cookie) {
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auto onDeath = static_cast<std::function<void(void)>*>(cookie);
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(*onDeath)();
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}
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struct WakelockNative::Impl {
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Impl() : suspend_death_recipient(AIBinder_DeathRecipient_new(onSuspendDeath)) {}
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std::function<void(void)> onDeath = [this] {
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LOG_ERROR("ISystemSuspend HAL service died!");
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this->suspend_service = nullptr;
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};
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std::shared_ptr<ISystemSuspend> suspend_service = nullptr;
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std::shared_ptr<IWakeLock> current_wakelock = nullptr;
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::ndk::ScopedAIBinder_DeathRecipient suspend_death_recipient;
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};
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void WakelockNative::Initialize() {
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LOG_INFO("Initializing native wake locks");
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const std::string suspendInstance = std::string() + ISystemSuspend::descriptor + "/default";
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pimpl_->suspend_service = ISystemSuspend::fromBinder(
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ndk::SpAIBinder(AServiceManager_waitForService(suspendInstance.c_str())));
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ASSERT_LOG(pimpl_->suspend_service, "Cannot get ISystemSuspend service");
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AIBinder_linkToDeath(
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pimpl_->suspend_service->asBinder().get(),
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pimpl_->suspend_death_recipient.get(),
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static_cast<void*>(&pimpl_->onDeath));
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}
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WakelockNative::StatusCode WakelockNative::Acquire(const std::string& lock_name) {
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if (!pimpl_->suspend_service) {
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LOG_ERROR("lock not acquired, ISystemService is not available");
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return StatusCode::NATIVE_SERVICE_NOT_AVAILABLE;
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}
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if (pimpl_->current_wakelock) {
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LOG_INFO("wakelock is already acquired");
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return StatusCode::SUCCESS;
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}
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auto status = pimpl_->suspend_service->acquireWakeLock(
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WakeLockType::PARTIAL, lock_name, &pimpl_->current_wakelock);
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if (!pimpl_->current_wakelock) {
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LOG_ERROR("wake lock not acquired: %s", status.getDescription().c_str());
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return StatusCode::NATIVE_API_ERROR;
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}
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return StatusCode::SUCCESS;
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}
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WakelockNative::StatusCode WakelockNative::Release(const std::string& lock_name) {
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if (!pimpl_->current_wakelock) {
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LOG_WARN("no lock is currently acquired");
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return StatusCode::SUCCESS;
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}
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pimpl_->current_wakelock->release();
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pimpl_->current_wakelock = nullptr;
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return StatusCode::SUCCESS;
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}
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void WakelockNative::CleanUp() {
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LOG_INFO("Cleaning up native wake locks");
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if (pimpl_->current_wakelock) {
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LOG_INFO("releasing current wakelock during clean up");
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pimpl_->current_wakelock->release();
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pimpl_->current_wakelock = nullptr;
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}
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if (pimpl_->suspend_service) {
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LOG_INFO("Unlink death recipient");
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AIBinder_unlinkToDeath(
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pimpl_->suspend_service->asBinder().get(),
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pimpl_->suspend_death_recipient.get(),
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static_cast<void*>(&pimpl_->onDeath));
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pimpl_->suspend_service = nullptr;
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}
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}
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WakelockNative::WakelockNative() : pimpl_(std::make_unique<Impl>()) {}
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WakelockNative::~WakelockNative() = default;
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} // namespace internal
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} // namespace os
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} // namespace bluetooth
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